Lin manufacturing co



2 "sheets-sheet 1.

(No Model.)

C. R. DAVIS.

WHEEL GULTIVATOR.

Patented Sept. 13, 1887.

Mozuott 2 Sheets-Sheet 2.

(No Model.)

C. R. DAVIS.

WHEEL GULTIVATOR.

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IINTTBD STATES ATnNT rrrcn.

CALVIN R. DAVIS, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE KIMBER- LIN MANUFACTURING WH EEL-CU CO., OF SAME PLACE.

LTIVATOR.

SPECIFICATION forming part of Letters Patent No. 369,696, dated September 13, 1887.

Application filed July 14, 18S?.

To ctZZ whom, it may concern:

Be it known that I, CALVIN R. DAVIS, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful lmprovementiniNVheel-Cultivators, of which the following is a specification.

My invention relates toan improvement in wheel-cultivators of that class in which the plow-beams are arranged in pairs, the individual beams of which are fiexibly coupled together, so as to remain parallel at all times, and in which springs are arranged to assistin lifting the rear ends of the plow-beams and the plows.

The objects of myimprovement are, first, to so connect the plow-beams with the wheel-axle and with the springs for lifting the beams that the draft-coupling may be connected directly to the plow-beams and said beams be free to move forward and backward with the draftcoupling independently of the axle and without changing or affecting the tension of the spring; and, second, to provide improved means for fieXibly coupling the individual plow-beams constituting each pair together, whereby they may preserve their parallelism, but be less liable to twist in their couplings than heretofore, all as hereinafter fully described. y

The accompanying drawings illustrate my invention.

Figure l is a side elevation'taken from the center of the arched axle and looking outward. Fig. 2 is a plan of the same. Fig. 3 is a rear elevation of the same having the plow-beam removed. Fig. 4 is a detail view showing, on a larger scale, a side elevation of the liftingspring and its connections. Fig. 5 is a View in perspective, on alarger scale, of the forward plow-beam coupling.

A is the arched axle.

B is a lbracket havinglugs c @and a projecting arm, d, terminating in a short horizontal bar, 2. Bracket B is rigidly secured to the axle by bolts l 1.

E is a light rectangular frame, preferably of wrought-iron, and pivoted at its upper end to the lugs c. The forward plow-beam coupling consists of a short shaft, f, having at each Serial No. 244,239. (No model.)

' endjonrnals g g, two llat lugs, h h, projecting in the same plane from one side of the shaft, and a central arm, z', projecting from the same side of the shaft at an angle of about fortyiive degrees to the plane oflugs h, and having at its lower end a short upturned slotted lug, j. rlhejournals g ofthe plow-beam coupling enter and turn in bearings formed in opposite sides of the swinging frame E, near its lower end.

J is the spring-support, which consists of a light casting having a flat central portion at k, to which one end of the dat bow-spring Z is rigidly secured, one end of the spring-support being forked and arranged to embrace and rest upon the shaftf on each side of the arm t', so as to turn easily thereon, as at on, and the other end terminating in a short horizontal bar, n, which is pivotally connected by a pair of parallel bars, 0 o, with the bar 2 of arm d. 7o The free end ofthe spring Zis connected, by a rod, p, and turn-buckle r, with thelug 7' ofthe arm z', forming partof the plow-beam coupling.

S is the draft-bar, which is attached by suit- A able' eyes turned thereon to the opposite ends of the plow-beam coupling. Each plow-beam consists of a pair ot' parallel bars, tt, having their forward ends terminating in clevises au, which are pivoted to the lugs hh of the plow- 8o beam coupling, so 4 as to swing laterally thereon, and their rear ends terminating ,in

eyes, as at o, which are pivoted to lugs w w, projecting from the connecting cross-bar The plow-standards y and e are secured to the cross bar m, the whole arrangement being such that as the plow-beam is swung from side to side the bars tt remain parallel, and the faces of the plows are kept at the same angle to the line of draft.

Heretofore in this class of plow-beams'the bars have been pivoted together at the ends only, and it has been found that as soon as the joints are slightly worn the beam has a loose twisting movement, rendering it very difficult to keep the plow-standards perpendicular. For the purpose of obviating this difficulty I provide a short bar, 3, which is pivoted at each end to the bars ttatapoint between the clevises u and the eyes e, preferably nearer the eyes 1J. roo

To the center of bar 3, and to a vertical arm, 4, rising from the cross-bar x, I pivot a brace, 5. By this construction the beam is rendered much stiffer and the twisting movement is prevented. It will be observed that the lifting-spring Z and the plow-beam coupling are suspended from the axle by the frame E and bars o o. By this construction the drafton each gang of plows is practically independent, and the lifting-spring, instead of being rigidly secured to the axle, as heretofore, moves backward and forward with the plow-beam coupling, and its relation thereto is not changed by such movement, and while the draft is independent of the axle the tension of the spring is not changed by the draft.

When the plow-beam is in its working position, as in Fig. l, it will be seen that the pull ofthe lifting-spring is nearly lengthwise of the arm i of the plow-beam coupling, so that although the spring is at its greatest tension its lifting effect on the plow-beam is but slight;

but as soon as the plows are slightly lifted,

thus changing the line of draft of the spring, the plow-beam is quickly lifted by the spring to the position shown in Fig. 4.

For the purpose of preventing the plowbeam from swaying from side to side when raised, I form on thespring-supportJ a pair of upwardly-projecting guide-arms, 6 6, between which the forward end ofthe beam is held'.

I claim as my invention- 1. In a wheel-cultivator, the combination of the following elements, namely: an arched axle mounted on carrying-wheels, a Aframe suspended from said axle and arranged to swing forward and backward in the line of draft of the implement, a plow-beam pivotally secured to the free end of said swinging frame, so as to swing in a vertical plane thereon, a lifting-spring having one end mounted on the swinging frame, and intermediate connecting mechanism connecting the other end of the spring to the plow-beam, whereby the spring is put in tension by the downward movement of the plow-beam, the beam is raised by the recoil of the spring, and the entire spring moves forward and backward with the plowbeam independently of the movement of the axle, substantially as set forth.

2. In a wheel-cultivator, the combination of the following elements, namely: the arched axle mounted on carrying-wheels, the frame suspended from said axle and arranged to swing forward and backward in the line of draft of the implement, the plow-beam pivotally secured to the free end of said swinging frame, so as to swing in a vertical plane there` on, the spring-support mounted on the frame, the bowspring having one end rigidly secured to said spring-support, and intermediate connecting mechanism'connecting the other end of the spring to the plow-beam, whereby the spring is put in tension by the downward movement of the plowbeam,the beam is raised by the recoil of the spring, and the entire spring moves forward and backward with the plow-beam independently of the movement of the axle, without changing the tension of the spring, substantially as set forth.

3. In a wheel-cultivator, the arched axle mounted on carrying-wheels, the bracket secured to the axle and having arncl, the swinging frame E and bars o 0, pivoted to said bracket, the plow-beam coupling having lugs 7i hand arm i, the spring-support mounted on the plow-beam coupling and on the bars o 0 and arranged to turn thereon, the spring mounted on said spring-support and having its free end connected with the arm t', and the plow-beam, all arranged to co-operate substantiallyas and for the purpose specified.

4. In a wheel-eultivator, the combination, with the frame E, the plow-beam coupling, the plowbeam, andthe spring-support J, of the guide'arms 6 6, arranged substantially as and for the purpose specified.

5. In a wheel-cultivator having a plow-beam consisting of a pair of parallel bars united at their opposite ends by flexible couplings, the combination, with said bars and couplings, of the intermediate cross-bar, 3, pivoted at its opposite ends to the bars, and the brace 5, pivoted to the rear coupling and to the crossbar, all substantially as and for the purpose specified.

CALVIN R. DAVIS.

Witnesses:

L. F. KIMBERLIN, H. P. Hoon. 

